US3618135A - Variable capacitor of the locking type - Google Patents

Variable capacitor of the locking type Download PDF

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Publication number
US3618135A
US3618135A US9220A US3618135DA US3618135A US 3618135 A US3618135 A US 3618135A US 9220 A US9220 A US 9220A US 3618135D A US3618135D A US 3618135DA US 3618135 A US3618135 A US 3618135A
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Prior art keywords
bushing
susceptance
aperture
capacitance
susceptance element
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US9220A
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Carroll E Weller
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JM Huber Corp
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Avco Corp
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Assigned to J. M. HUBER CORPORATION, A CORP. OF NEW JERSEY reassignment J. M. HUBER CORPORATION, A CORP. OF NEW JERSEY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AV ELECTRONICS CORPORATION
Assigned to AV ELECTRONICS CORPORATION, A CORP. OF AL reassignment AV ELECTRONICS CORPORATION, A CORP. OF AL ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AVCO CORPORATION
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924—Coupled nut and bolt
    • Y10S411/954—Wedged slotted bolt

Definitions

  • a bushing having an expansible segmented fore portion which projects through an aperture in the wall of the device being tuned, together with a locking screw arranged to force the segments into the edges of said aperture, thereby to assure favorable electrical characteristics and a secure lock of the setting of capacitance or susceptance.
  • VARIAIIIILIE IIAIPA'CI'IGR IF THE LOCKING TIIIPIE BACKGROUND OF THE INVENTION AND OBJECTS
  • One purpose of the invention is to provide a capacitor hav ing negligible series resistance and parasitic inductance.
  • another object of the invention is to provide a capacitor having high values of Q and self-resonant frequency.
  • a further objective is to accomplish firm and secure mechanical locking without disturbing any one of many possible capacitance or susceptance settings.
  • the low loss capacitor in accordance with the invention is useful in ultra high frequencies and microwave frequencies. In one form it is used as a variable susceptance in the tuning of a wave guide.
  • FIG. I is a perspective view of a variably positioned capacitance element in accordance with the invention.
  • FIG. 2 is a sectional view through the end wall ofa coaxial cavity showing a longitudinal section of the FIG. 1 capacitance element as installed in place, and in association with an inductor;
  • FIG. 3 is an end view of the wave guide wall showing the location of wrench receiving apertures in the FIG. I capacitor;
  • FIG. I is a form of wrench suitable for use in adjusting the capacitor
  • FIGS. 3 and 6 are longitudinal sectional views of modified forms of capacitance element in accordance with the invention.
  • FIG. 7 is an elevational sectional view of a preferred form of variable susceptance device in accordance with the invention.
  • FIG. 2 there is shown a section of the end wall of a coaxial cavity II) in which is mounted an inductive element II (pictorially shown).
  • the invention is useful in any tunable structure having distributed parameters.
  • the coaxial cavity is tuned to resonance by means of a cylindrical piece of metal which is variably positioned with respect to the inductive element II.
  • a structural tuning means in the form of a variably positioned tuning element I2 which is adapted to be fitted into an aperture in the tunable structure It) and to be variably projected into the resonant structure so as to tune it.
  • the aperture I3 is circular in form as it opens out into the interior of the cavity.
  • the rear portion of the aperture I3 is enlarged and provided with threads 14.
  • the variably positioned bushing I2 is hollow and its fore portion is multiply split as illustrated by slot IE to provide four or more arcuate segments such as 16 and I7.
  • the rear portion of bushing I2 is enlarged or flanged and is formed with threads 18, complementary to threads Id, so that the bushing may be advanced or retracted into the aperture I3 and variably positioned as desired.
  • the bushing I2 is formed interiorly, near its front, with a' generally conical ball-containing compartment, converging towards the front and providing thrust surfaces I9.
  • Locking means adapted to bear against said thrust surface 19 is provided in the subcombination of a setscrew 20 and a ball 21, confined within said conical chamber, said ball being generally the equivalent of a blunt nose on the setscrew in that the ball is advanced against the thrust surfaces, the ball being seated in a concave seat 22 on the front of the setscrew.
  • a wrench comprising a wafer 23 from which project four prongs, such as 26, 23 and 26, adapted to be seated in complementary depressions such as 26, 29 and 30, for example, formed on the rear face of bushing I2.
  • the wafer 23 is manually turned to advance or retract bushing I2, as required.
  • TI-Ie depressions are shown in FIG. 3.
  • the bushing is longitudinally threaded as shown at BI and the setscrew is threaded in complementary fashion.
  • a slot 32, formed in the end of the setscrew permits its adjustment as a conventional screw.
  • FIG. 5 A modified form of variably positioned tuning element is illustrated in FIG. 5.
  • the ball 211 is omitted and the wedging action for causing the segments of the bushing to expand is provided by forming the nose of the setscrew with a conical surface 33.
  • an integral nut formation 34 is formed at the rear of the bushing to provide for adjustment ofthe bushing, here numbered I2.
  • FIG. 6 there is illustrated still another modified form in which the wedging action is obtained! by shaping the front of the locking screw in blunt-nosed bulletlike fashion, as indicated at 35.
  • the exterior threads III of this bushing extend substantially throughout its length. It will be understood that this bushing is adapted to be fitted into a threaded aperture of uniform diameter in the wave guide, thus simplifying machining operations for forming the aperture. Adjustment of the position of the FIG. 6 bushing I2" is accomplished by the use ofa nut formation 34'.
  • the structural tuning means comprises a. generally cylindrical susceptance element 36 together with the cooperating bushing element 63.
  • the susceptance element 36 has three or more slots, having uniform angular displacement, cut as shown at 611.
  • the slots cut into susceptance element 36 make it capable of bulging or expansion at its interface with wall It).
  • the bushing element 43 is formed in accordance with the teaching of the FIGS. 2 and 6 embodiments, having a ball 2I of FIG. 2 and the continuous threads 18 of the FIG. 6 embodiment.
  • the expression structural tuning means" as applied to FIG. 7 includes both the susceptance element 36 and the bushing 63.
  • the last element is split to provide expansible segments, so that both elements have expansible portions.
  • the forward end of the susceptance element 36 is projected into the wave guide 10 a significant distance.
  • the susceptance element 36 is exteriorly threaded as shown at 38 and is formed at its trailing end with an integral nut 62, so that the susceptance element can be adjustably threaded into the threaded aperture 46 formed in wave guide 16', also into the threads 39 of collar 45.
  • the metallic collar I5 Secured to the exterior of the wave guide It) is the metallic collar I5, formed with screw threads 39 in alignment with screw threads III.
  • the bushing 43 of FIG. 7 is exteriorly threaded to complement the interior threads 3'7.
  • the susceptance element 36 is first positioned as desired. Then the bushing 43 is advanced so that it projects slightly into the wave guide. Finally, setscrew 20 is advanced to cause expansion of the fore portions of the bushing 43 and the wall of susceptance element 36 to lock all of the parts in secure position.
  • a flanged cap 46 is screwed on to collar 45 and sealing is provided by a suitable gasket 47.
  • the expansible portions of the element 12 participate in the performance of the functions of tuning, locking and providing a secured ground.
  • the expansible portions of the susceptance element 36 participate in the functions of tuning, grounding and locking.
  • said structural tuning means comprising a variably positioned susceptance element adapted to be fitted into said opening and a bushing member adapted to project into said susceptance member,
  • said susceptance element and said bushing member being split to provide expansible portions
  • the bushing is exteriorly threaded adjustably to fit into the susceptance element and the locking means includes a setscrew exteriorly threaded to fit into the bushing.

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Abstract

The invention here disclosed is a variably positioned capacitance or susceptance element of particular utility in tuning striplines and cavities excited in the TEM mode. It is characterized by a bushing having an expansible segmented fore portion which projects through an aperture in the wall of the device being tuned, together with a locking screw arranged to force the segments into the edges of said aperture, thereby to assure favorable electrical characteristics and a secure lock of the setting of capacitance or susceptance.

Description

ilnited Statea Patent [72] Inventor Carroll 1E. Weller Cincinnati, Ohio [2]] App]. No. 9,220 [22] Filed Feb. 6, 1970 [45] Patented Nov. 2, 19711 [73] Assignee Avco Corporation Cincinnati, Ohio [54] VARIABLE CAPACITOR 011* THE LOCKING TYPE 3 Claims, 7 Drawing Figs.
[52] 11.8. CI 333/83 1R, 333/98 R, 151/31, 85/84 [51] Int.Cl 111101p7/06, F16b 39/06, F16b 39/284 [50] Field otsearch 333/97,98; 151/31; 85/84 [56] References Cited UNITED STATES PATENTS 1,279,919 9/1918 Scusa 151/31 Primary Examiner- Herman Karl Saallbach Assistant Examinerwm. H. Punter Attorney-Charles M. Hogan ABSTRACT: The invention here disclosed is a variably positioned capacitance or susceptance element ofparticular utility in tuning striplines and cavities excited in the TEM mode. It is characterized by a bushing having an expansible segmented fore portion which projects through an aperture in the wall of the device being tuned, together with a locking screw arranged to force the segments into the edges of said aperture, thereby to assure favorable electrical characteristics and a secure lock of the setting of capacitance or susceptance.
PATENTEU rem/2 I971 .R mE (L TL NE V W WE L L O R R A C ATTORNEY.
VARIAIIIILIE IIAIPA'CI'IGR (IF THE LOCKING TIIIPIE BACKGROUND OF THE INVENTION AND OBJECTS One purpose of the invention is to provide a capacitor hav ing negligible series resistance and parasitic inductance. Correlatively, another object of the invention is to provide a capacitor having high values of Q and self-resonant frequency.
A further objective is to accomplish firm and secure mechanical locking without disturbing any one of many possible capacitance or susceptance settings.
The low loss capacitor in accordance with the invention is useful in ultra high frequencies and microwave frequencies. In one form it is used as a variable susceptance in the tuning of a wave guide.
DESCRIPTION OF THE DRAWINGS For a better understanding of the invention, together with other and further objects, advantages and capabilities thereof, reference is made to the following description of the accompanying drawings, in which:
FIG. I is a perspective view of a variably positioned capacitance element in accordance with the invention;
FIG. 2 is a sectional view through the end wall ofa coaxial cavity showing a longitudinal section of the FIG. 1 capacitance element as installed in place, and in association with an inductor;
FIG. 3 is an end view of the wave guide wall showing the location of wrench receiving apertures in the FIG. I capacitor;
FIG. I is a form of wrench suitable for use in adjusting the capacitor;
FIGS. 3 and 6 are longitudinal sectional views of modified forms of capacitance element in accordance with the invention;
FIG. 7 is an elevational sectional view of a preferred form of variable susceptance device in accordance with the invention.
DETAILED DESCRIPTION OF THE INVENTION Referring first specifically to FIG. 2, there is shown a section of the end wall ofa coaxial cavity II) in which is mounted an inductive element II (pictorially shown). The invention is useful in any tunable structure having distributed parameters. The coaxial cavity is tuned to resonance by means ofa cylindrical piece of metal which is variably positioned with respect to the inductive element II. In accordance with the invention, there is provided a structural tuning means in the form of a variably positioned tuning element I2 which is adapted to be fitted into an aperture in the tunable structure It) and to be variably projected into the resonant structure so as to tune it. The aperture I3 is circular in form as it opens out into the interior of the cavity. The rear portion of the aperture I3 is enlarged and provided with threads 14.
The variably positioned bushing I2 is hollow and its fore portion is multiply split as illustrated by slot IE to provide four or more arcuate segments such as 16 and I7. The rear portion of bushing I2 is enlarged or flanged and is formed with threads 18, complementary to threads Id, so that the bushing may be advanced or retracted into the aperture I3 and variably positioned as desired.
It is important that, when the capacitance parameter is predetermined by a selected positioning of the bushing 12, the bushing then be locked in place in such a manner as not to upset the capacitance parameter of the tuned cavity. For that purpose the bushing I2 is formed interiorly, near its front, with a' generally conical ball-containing compartment, converging towards the front and providing thrust surfaces I9. Locking means adapted to bear against said thrust surface 19 is provided in the subcombination of a setscrew 20 and a ball 21, confined within said conical chamber, said ball being generally the equivalent of a blunt nose on the setscrew in that the ball is advanced against the thrust surfaces, the ball being seated in a concave seat 22 on the front of the setscrew.
Referring now to FIG. I, there is shown a wrench, comprising a wafer 23 from which project four prongs, such as 26, 23 and 26, adapted to be seated in complementary depressions such as 26, 29 and 30, for example, formed on the rear face of bushing I2. The wafer 23 is manually turned to advance or retract bushing I2, as required. TI-Ie depressions are shown in FIG. 3.
Referring again to FIG. 2, the bushing is longitudinally threaded as shown at BI and the setscrew is threaded in complementary fashion. A slot 32, formed in the end of the setscrew permits its adjustment as a conventional screw.
When the coaxial cavity has been tuned to the desired frequency by positioning bushing I2, setscrew 20 is then ad vanced so as to push ball 21 against the thrust surfaces I9, thereby forcing the segments, such as I6 and I7, radially outwardly and into firm positive contact with the sidewalls of the aperture in the cavity. The expansion of the segments into contact with the sidewall is accompanied by negligible change in the capacitance between the elements II and I2. The positive metal contact between the segments and sidewalls of the aperture provides solid grounding and reduces the series resistance and the parasitic inductance of the capacitor.
A modified form of variably positioned tuning element is illustrated in FIG. 5. In this form the ball 211 is omitted and the wedging action for causing the segments of the bushing to expand is provided by forming the nose of the setscrew with a conical surface 33. Additionally, an integral nut formation 34 is formed at the rear of the bushing to provide for adjustment ofthe bushing, here numbered I2.
In FIG. 6, there is illustrated still another modified form in which the wedging action is obtained! by shaping the front of the locking screw in blunt-nosed bulletlike fashion, as indicated at 35. The exterior threads III of this bushing, extend substantially throughout its length. It will be understood that this bushing is adapted to be fitted into a threaded aperture of uniform diameter in the wave guide, thus simplifying machining operations for forming the aperture. Adjustment of the position of the FIG. 6 bushing I2" is accomplished by the use ofa nut formation 34'.
Referring now specifically to FIG. 7, the structural tuning means, here shown, comprises a. generally cylindrical susceptance element 36 together with the cooperating bushing element 63. The susceptance element 36 has three or more slots, having uniform angular displacement, cut as shown at 611. The slots cut into susceptance element 36 make it capable of bulging or expansion at its interface with wall It). The bushing element 43 is formed in accordance with the teaching of the FIGS. 2 and 6 embodiments, having a ball 2I of FIG. 2 and the continuous threads 18 of the FIG. 6 embodiment. The expression structural tuning means" as applied to FIG. 7 includes both the susceptance element 36 and the bushing 63. The last element is split to provide expansible segments, so that both elements have expansible portions.
In the FIG. 7 embodiment, the forward end of the susceptance element 36 is projected into the wave guide 10 a significant distance.
The susceptance element 36 is exteriorly threaded as shown at 38 and is formed at its trailing end with an integral nut 62, so that the susceptance element can be adjustably threaded into the threaded aperture 46 formed in wave guide 16', also into the threads 39 of collar 45.
Secured to the exterior of the wave guide It) is the metallic collar I5, formed with screw threads 39 in alignment with screw threads III.
The bushing 43 of FIG. 7 is exteriorly threaded to complement the interior threads 3'7.
In preparing for operation, the susceptance element 36 is first positioned as desired. Then the bushing 43 is advanced so that it projects slightly into the wave guide. Finally, setscrew 20 is advanced to cause expansion of the fore portions of the bushing 43 and the wall of susceptance element 36 to lock all of the parts in secure position.
When the wave guide is pressurized, a flanged cap 46 is screwed on to collar 45 and sealing is provided by a suitable gasket 47.
In the FIG. 2 embodiment, the expansible portions of the element 12 participate in the performance of the functions of tuning, locking and providing a secured ground. Similarly, in the embodiment of FIG. 7, the expansible portions of the susceptance element 36 participate in the functions of tuning, grounding and locking.
While there have been shown and described what are presently understood to be the preferred embodiments of the invention, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims.
1. For use in a tunable structure of the type having distributed parameters and formed with a receiving opening having a wall, the combination of:
structural tuning means adapted to be adjustably projected into said structure,
said structural tuning means comprising a variably positioned susceptance element adapted to be fitted into said opening and a bushing member adapted to project into said susceptance member,
said susceptance element and said bushing member being split to provide expansible portions, and
means for forcing said expansible portions outwardly against the wall of said opening to lock said structural tuning means in the desired position.
2. The combination in accordance with claim 1 in which the bushing is formed interiorly with thrust surfaces and in which the locking means wedges against said thrust surfaces.
3. The combination in accordance with claim 2 in which the susceptance element is exteriorly threaded adjustably to fit into the tunable structure,
the bushing is exteriorly threaded adjustably to fit into the susceptance element and the locking means includes a setscrew exteriorly threaded to fit into the bushing.
t l l I! t

Claims (3)

1. For use in a tunable structure of the type having distributed parameters and formed with a receiving opening having a wall, the combination of: structural tuning means adapted to be adjustably projected into said structure, said structural tuning means comprising a variably positioned susceptance element adapted to be fitted into said opening and a bushing member adapted to project into said susceptance member, said susceptance element and said bushing member being split to provide expansible portions, and means for forcing said expansible portions outwardly against the wall of said opening to lock said structural tuning means in the desired position.
2. The combination in accordance with claim 1 in which the bushing is formed interiorly with thrust surfaces and in which the locking means wedges against said thrust surfaces.
3. The combination in accordance with claim 2 in which the susceptance element is exteriorly threaded adjustably to fit into the tunable structure, the bushing is exteriorly threaded adjustably to fit into the susceptance element and the locking means includes a setscrew exteriorly threaded to fit into the bushing.
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909749A1 (en) * 1979-03-13 1980-09-18 Stumpp & Kurz Expanding socket for widening bore - has expanding component with external thread screwing in sleeve and tool socket
US4259890A (en) * 1979-01-15 1981-04-07 Walsh James H Removable anchor assemblies
US4380747A (en) * 1980-03-04 1983-04-19 Thomson-Csf Tunable ultra-high frequency filter with variable capacitance tuning devices
US4647883A (en) * 1983-08-27 1987-03-03 Oxley Robert Frederick Tuning screw having a resilient plastics bush which supports the tuning plunger within a metal bush
US4794354A (en) * 1987-09-25 1988-12-27 Honeywell Incorporated Apparatus and method for modifying microwave
US5017067A (en) * 1989-05-29 1991-05-21 Scantool Handelsbolag Anchoring bolt device
US5482417A (en) * 1993-10-12 1996-01-09 Kennametal Inc. Cam and wedge-type self-locking mechanism
US5527023A (en) * 1994-07-08 1996-06-18 Monogram Aerospace Fasteners Alignment device with radially expandable tube
DE19543651A1 (en) * 1995-11-23 1997-07-03 Brose Fahrzeugteile Threaded expansion rivet for fastening
US6118356A (en) * 1998-09-16 2000-09-12 Hughes Electronics Corporation Microwave cavity having a removable end wall
US20040024394A1 (en) * 2001-05-29 2004-02-05 Wallace Michael P. Absorbable implantable vaso-occlusive member
US20040057810A1 (en) * 2002-09-21 2004-03-25 Breslin Patrick W. Split lock screw fastener assembly and method
US20040136802A1 (en) * 2003-01-09 2004-07-15 Yen-Tseng Lin Expansion bolt
US20050008448A1 (en) * 2003-07-09 2005-01-13 Doubler Robert L. Precise linear fastener system and method for use
US20050129459A1 (en) * 2003-12-10 2005-06-16 Doubler Robert L. Internally disposed linear fastener system
US20050191122A1 (en) * 2004-03-01 2005-09-01 Gethmann Douglas P. Locking mechanism for a threaded connection
WO2005093268A1 (en) * 2004-03-01 2005-10-06 Fisher Controls International Llc Anti-rotation apparatus for use with threaded components
US20050277924A1 (en) * 2004-06-09 2005-12-15 Centerpulse Spine-Tech, Inc. Orthopedic fixation connector
US20080018159A1 (en) * 2006-06-01 2008-01-24 Alexander Grunow Height adjustable headrest device
US20230175251A1 (en) * 2020-05-15 2023-06-08 Nam Hyun Jo Strong anchor

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US1279919A (en) * 1918-01-24 1918-09-24 Scusa Machine & Tool Co Inc L Gage.
US1418524A (en) * 1921-01-05 1922-06-06 Adelbert E Bronson Dust-cap construction
US2180030A (en) * 1935-10-26 1939-11-14 Bugatti Ettore Bolt
US3042094A (en) * 1959-09-30 1962-07-03 Elsa I Liljeberg Locking screw with expanding means at each end
US3226662A (en) * 1961-01-24 1965-12-28 Int Standard Electric Corp Mechanical frequency control in a klystron tube comprising a directly attached rectangular cavity resonator
US3392354A (en) * 1965-12-23 1968-07-09 Sylvania Electric Prod Multiple-diameter smooth-surface waveguide tuning post

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
DD59437A (en) *
US1279919A (en) * 1918-01-24 1918-09-24 Scusa Machine & Tool Co Inc L Gage.
US1418524A (en) * 1921-01-05 1922-06-06 Adelbert E Bronson Dust-cap construction
US2180030A (en) * 1935-10-26 1939-11-14 Bugatti Ettore Bolt
US3042094A (en) * 1959-09-30 1962-07-03 Elsa I Liljeberg Locking screw with expanding means at each end
US3226662A (en) * 1961-01-24 1965-12-28 Int Standard Electric Corp Mechanical frequency control in a klystron tube comprising a directly attached rectangular cavity resonator
US3392354A (en) * 1965-12-23 1968-07-09 Sylvania Electric Prod Multiple-diameter smooth-surface waveguide tuning post

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259890A (en) * 1979-01-15 1981-04-07 Walsh James H Removable anchor assemblies
DE2909749A1 (en) * 1979-03-13 1980-09-18 Stumpp & Kurz Expanding socket for widening bore - has expanding component with external thread screwing in sleeve and tool socket
US4380747A (en) * 1980-03-04 1983-04-19 Thomson-Csf Tunable ultra-high frequency filter with variable capacitance tuning devices
US4647883A (en) * 1983-08-27 1987-03-03 Oxley Robert Frederick Tuning screw having a resilient plastics bush which supports the tuning plunger within a metal bush
US4794354A (en) * 1987-09-25 1988-12-27 Honeywell Incorporated Apparatus and method for modifying microwave
US5017067A (en) * 1989-05-29 1991-05-21 Scantool Handelsbolag Anchoring bolt device
US5482417A (en) * 1993-10-12 1996-01-09 Kennametal Inc. Cam and wedge-type self-locking mechanism
US5527023A (en) * 1994-07-08 1996-06-18 Monogram Aerospace Fasteners Alignment device with radially expandable tube
DE19543651A1 (en) * 1995-11-23 1997-07-03 Brose Fahrzeugteile Threaded expansion rivet for fastening
DE19543651C2 (en) * 1995-11-23 1999-06-02 Brose Fahrzeugteile Expandable fastener for attaching or connecting parts
US6118356A (en) * 1998-09-16 2000-09-12 Hughes Electronics Corporation Microwave cavity having a removable end wall
US20040024394A1 (en) * 2001-05-29 2004-02-05 Wallace Michael P. Absorbable implantable vaso-occlusive member
US20040057810A1 (en) * 2002-09-21 2004-03-25 Breslin Patrick W. Split lock screw fastener assembly and method
US6908271B2 (en) 2002-09-21 2005-06-21 Patrick W. Breslin Split lock screw fastener assembly and method
WO2004027270A3 (en) * 2002-09-21 2005-04-07 Patrick W Breslin Split lock screw fastener assembly and method
US7165924B1 (en) 2002-09-21 2007-01-23 Mary A. Breslin Split lock screw fastener assembly and method
US20040136802A1 (en) * 2003-01-09 2004-07-15 Yen-Tseng Lin Expansion bolt
US6874984B2 (en) * 2003-01-09 2005-04-05 Yen-Tseng Lin Expansion bolt having internal spherical member and rear driving bolt
US20050008448A1 (en) * 2003-07-09 2005-01-13 Doubler Robert L. Precise linear fastener system and method for use
US7658582B2 (en) * 2003-07-09 2010-02-09 Ortho Innovations, Llc Precise linear fastener system and method for use
US7862281B2 (en) 2003-07-09 2011-01-04 Spinal, Llc Precise linear fastener system and method for use
US7118303B2 (en) * 2003-12-10 2006-10-10 Zimmer Spine, Inc. Internally disposed linear fastener system
US20050129459A1 (en) * 2003-12-10 2005-06-16 Doubler Robert L. Internally disposed linear fastener system
US20070025813A1 (en) * 2003-12-10 2007-02-01 Zimmer Spine, Inc. Internally Disposed Linear Fastener System
US7334961B2 (en) 2003-12-10 2008-02-26 Zimmer Spine, Inc. Internally disposed linear fastener system
US20050191122A1 (en) * 2004-03-01 2005-09-01 Gethmann Douglas P. Locking mechanism for a threaded connection
WO2005093268A1 (en) * 2004-03-01 2005-10-06 Fisher Controls International Llc Anti-rotation apparatus for use with threaded components
US20050277924A1 (en) * 2004-06-09 2005-12-15 Centerpulse Spine-Tech, Inc. Orthopedic fixation connector
US7763049B2 (en) 2004-06-09 2010-07-27 Zimmer Spine, Inc. Orthopedic fixation connector
US20080018159A1 (en) * 2006-06-01 2008-01-24 Alexander Grunow Height adjustable headrest device
US20230175251A1 (en) * 2020-05-15 2023-06-08 Nam Hyun Jo Strong anchor

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